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Renesas R5F21226DFP#U0
- Part No.:
- R5F21226DFP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
R5F21226DFP#U0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,658
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Product details
Overview
R5F21226DFP#U0 from Renesas Electronics is a 16-bit R8C/22 Group microcontroller built on silicon gate CMOS, featuring an R8C CPU core, 32 KB flash program memory, 2 KB RAM, and operating at up to 20 MHz (50 ns min instruction time). It integrates a CAN 2.0B module (16-slot), LIN hardware interface, 10-bit 12-channel ADC, UART0/UART1, I²C, and timers including 16-bit Timer RD ×2. It targets automotive body control and industrial FA networking applications.
For engineers reviewing the R5F21226DFP#U0 datasheet, R5F21226DFP#U0 pinout, R5F21226DFP#U0 application, or R5F21226DFP#U0 equivalent, key selection criteria include its -40°C to +85°C D-version temperature grade, 48-pin LQFP (PLQP0048KB-A) package, CAN/LIN dual-protocol support, and absence of embedded data flash-distinguishing it from R8C/23 Group variants.
Technical Context
The R5F21226DFP#U0 implements the R8C CPU core with 89 fundamental instructions and a 1 Mbyte unified address space. Its peripheral set includes two independent UART channels (UART0 with LIN hardware support via Timer RA, UART1 for general serial), a dedicated CAN 2.0B controller with 16 message buffers, and a 10-bit successive-approximation ADC with 12 analog inputs and internal reference voltage input (VREF).
It uses dual clock generation: an external crystal/resonator circuit (XIN/XOUT, 1–20 MHz) and an on-chip high-speed oscillator with frequency adjustment, plus low-speed on-chip oscillator. Oscillation stop detection and on-chip voltage detection with power-on reset ensure robust operation in automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C 16-bit CISC core with 89 instructions; enables compact code and deterministic real-time response |
| Max Clock Frequency | 20 MHz (50 ns min instruction time at VCC = 3.0–5.5 V); supports high-speed control loops |
| Memory | 32 KB flash program ROM + 2 KB RAM; sufficient for mid-complexity automotive firmware without external memory |
| CAN Interface | 1× CAN 2.0B compliant controller with 16 message slots; handles full CAN bus arbitration and filtering in hardware |
| ADC | 10-bit SAR ADC, 12 channels, with VREF pin; supports precise sensor signal acquisition (e.g., temperature, pressure) |
| Operating Temp | -40°C to +85°C (D version); qualified for under-hood and cabin electronics in passenger vehicles |
| Supply Voltage | 2.7–5.5 V; compatible with 3.3 V and 5 V system rails, easing integration into mixed-voltage designs |
Pinout & Package
Package: 48-pin plastic LQFP (PLQP0048KB-A), 7 mm × 7 mm body, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC / AVCC | Power supply input | Core and analog domain supply; requires local decoupling between VCC and VSS, AVCC and AVSS |
| RESET | Active-low reset input | Asynchronous hardware reset; must be held low ≥100 ns for reliable initialization |
| XIN / XOUT | Crystal oscillator interface | Supports external 1–20 MHz crystal or ceramic resonator; XOUT is output-only |
| CTX0 / CRX0 | CAN transmit/receive | Dedicated differential CAN bus interface pins; require external CAN transceiver (e.g., TJA1042) |
| AN0–AN11 | Analog inputs | 12-channel ADC input pins; AN0–AN7 mapped to P0_0–P0_7; AN8–AN11 mapped to P1_0–P1_3 |
| P1_4 / TXD0 P1_5 / RXD0 | UART0 data I/O | Primary UART channel supporting LIN physical layer via software-controlled break detection and sync field generation |
Key Features
| Feature | Design Value |
|---|---|
| Hardware LIN Module | Timer RA + UART0 co-implementation enables ISO 9141-2 and SAE J2602 compliance without CPU overhead for timing-critical LIN header generation |
| Dual UART Channels | UART0 (LIN-capable) and UART1 provide independent serial paths-e.g., diagnostics on UART0, sensor telemetry on UART1 |
| On-Chip Oscillators | High-speed (adjustable) and low-speed on-chip oscillators eliminate need for external crystals in non-CAN timing paths, reducing BOM cost |
| 16-Bit Timer RD ×2 | Two independent 16-bit timers with input capture/output compare support precise PWM generation and encoder quadrature decoding |
| Interrupt Architecture | 7-level priority with 14 internal + 6 external + 4 software sources enables deterministic real-time response for safety-critical tasks |
Applications
| Body Control Module (BCM) | Industrial PLC I/O Terminal |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and mirror adjustment in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN slave node firmware, managing CAN gateway functions, and sampling analog sensor signals (e.g., ambient light, battery voltage). Use Value: Integrated CAN 2.0B and hardware LIN reduce external component count; 32 KB flash accommodates multi-feature BCM firmware with OTA update capability. | Use Scenario: Remote I/O expansion unit connecting field devices (sensors, actuators) to a central PLC via CANopen or custom CAN protocol. IC Role / Device Role / Timing Role: CAN protocol handler and analog/digital I/O aggregator with real-time timestamping using Timer RD input capture. Use Value: 12-channel 10-bit ADC enables direct connection of industrial sensors; 48-pin LQFP provides ample GPIO for discrete I/O expansion. |
| Automotive HVAC Controller | Motor Drive Feedback Unit |
Use Scenario: Climate control unit regulating blower speed, air mix doors, and cabin temperature using thermistors and potentiometers. IC Role / Device Role / Timing Role: Sensor acquisition MCU interfacing with analog HVAC sensors and driving LIN-connected actuators (e.g., stepper motor drivers). Use Value: VREF pin allows ratiometric ADC measurements against stable reference; hardware LIN ensures jitter-free actuator command delivery. | Use Scenario: Closed-loop feedback module monitoring motor current, position, and temperature in BLDC/PMSM drives. IC Role / Device Role / Timing Role: Real-time ADC sampling and CAN message formatting for motor phase current (shunt-based) and encoder position data. Use Value: 16-bit Timer RD supports precise PWM dead-time insertion and encoder index pulse capture; CAN module handles high-priority fault reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F21226JFP | Same core, memory, peripherals, and package; J version rated for -40°C to +85°C (identical temp spec), but differs in production lot traceability and screening per Renesas quality documentation | No functional difference; used interchangeably where J-version qualification is specified | Select R5F21226JFP only if procurement requires J-version documentation or legacy BOM alignment |
| R5F21236DFP | Identical R8C/22 footprint and peripherals, but adds 2 KB data flash (1 KB ×2 blocks); otherwise same 32 KB program ROM, 2 KB RAM, and D-version temp grade | Enables EEPROM-like parameter storage (e.g., calibration data, device ID) without external serial EEPROM | Choose R5F21236DFP when field-updatable configuration storage is required; not drop-in due to different memory map and flash programming routines |
Compared with R5F21226DFP#U0, R5F21226JFP offers identical functionality with alternate quality documentation, while R5F21236DFP adds data flash for nonvolatile parameter storage-requiring firmware adaptation but enabling enhanced field serviceability.
Availability
R5F21226DFP#U0 is available at Aetrix Electronics and suitable for automotive body electronics, industrial fieldbus nodes, and motor control feedback systems requiring stable component supply across extended product lifecycles.
Supply support for R5F21226DFP#U0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R8C/22 Group, including R5F21226DFP#U0, was designed for cost-sensitive, real-time automotive and industrial control applications requiring CAN/LIN connectivity, analog sensing, and deterministic interrupt response-without data flash overhead.
FAQ
What is the maximum operating frequency and supply voltage range for R5F21226DFP#U0?
R5F21226DFP#U0 operates at up to 20 MHz with a supply voltage range of 3.0 V to 5.5 V. At 20 MHz, minimum instruction execution time is 50 ns. The device also supports 10 MHz operation down to 2.7 V, enabling flexible power design in battery-backed or wide-input automotive systems. These ratings are validated per Renesas Electrical Characteristics specifications in the R8C/22 Group Hardware Manual.
Does R5F21226DFP#U0 include embedded data flash memory?
No, R5F21226DFP#U0 does not include embedded data flash. It belongs to the R8C/22 Group, which features only program flash ROM (32 KB) and RAM (2 KB). Data flash (1 KB ×2 blocks) is exclusive to the R8C/23 Group, such as R5F21236DFP. This distinction is confirmed in Renesas' Product Information Tables 1.3 and 1.4, where R5F21226DFP is explicitly listed without data flash capacity.
Which communication interfaces are integrated into R5F21226DFP#U0?
R5F21226DFP#U0 integrates UART0 (with hardware LIN support via Timer RA), UART1, I²C bus interface (2-wire), clock-synchronous serial I/O with chip select (SSI/SCS/SSCK/SSO), and a full CAN 2.0B controller with 16 message slots. It does not include SPI or USB. All interfaces are implemented in hardware with dedicated registers and interrupt vectors, minimizing CPU load during serial data handling.
What is the pin-compatible alternative to R5F21226DFP#U0 with data flash?
R5F21236DFP is the direct pin-compatible alternative to R5F21226DFP#U0, sharing identical 48-pin LQFP (PLQP0048KB-A) packaging, peripheral register layout, and electrical characteristics-but adding 2 KB of data flash (1 KB ×2 blocks). However, it is not a drop-in replacement: firmware must be modified to use the separate data flash memory map (02400h–02BFFh) and updated programming algorithms.
How is the CAN module implemented in R5F21226DFP#U0?
R5F21226DFP#U0 implements a single CAN 2.0B-compliant controller with 16 message object slots, supporting both standard (11-bit) and extended (29-bit) identifiers. It includes hardware acceptance filtering, automatic retransmission, and error confinement. Physical layer interfacing requires an external CAN transceiver (e.g., SN65HVD230) connected to CTX0 (TX) and CRX0 (RX) pins, as specified in the R8C/22 Group Hardware Manual Section 18.
R5F21226DFP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 48-LQFP
- Series:
- R8C/2x/22
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- CANbus, I2C, LINbus, SIO, SSU, UART/USART
- Peripherals:
- POR, Voltage Detect, WDT
- Number of I/O:
- 41
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F21226DFP#U0 FAQ
1.How can I place an order for R5F21226DFP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F21226DFP#U0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R5F21226DFP#U0 reliable?
The price and inventory of R5F21226DFP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F21226DFP#U0 is usually 5 days.
3.What payment methods are accepted for R5F21226DFP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F21226DFP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F21226DFP#U0?
R5F21226DFP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F21226DFP#U0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R5F21226DFP#U0?
For technical support, including R5F21226DFP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F21226DFP#U0 requirements.
6.How does Aetrix verify that R5F21226DFP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F21226DFP#U0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F21226DFP#U0 meets industry standards.
7.What is the process for return or replacement of R5F21226DFP#U0?
All R5F21226DFP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F21226DFP#U0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R5F21226DFP#U0 part is unused and in its original packaging.
Return procedure for R5F21226DFP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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